1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.tools.comparator;
24  
25  import java.util.Comparator;
26  import java.util.List;
27  
28  /**
29   * <a href="ColumnsComparator.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Brian Wing Shun Chan
32   */
33  public class ColumnsComparator implements Comparator<Object> {
34  
35      public ColumnsComparator(String columnName) {
36          this(new String[] {columnName});
37      }
38  
39      public ColumnsComparator(List<String> columnNames) {
40          this(columnNames.toArray(new String[columnNames.size()]));
41      }
42  
43      public ColumnsComparator(String[] columnNames) {
44          _columnNames = columnNames;
45      }
46  
47      public int compare(Object obj1, Object obj2) {
48          Object[] column1 = (Object[])obj1;
49          Object[] column2 = (Object[])obj2;
50  
51          String columnName1 = (String)column1[0];
52          String columnName2 = (String)column2[0];
53  
54          int x = -1;
55  
56          for (int i = 0; i < _columnNames.length; i++) {
57              if (_columnNames[i].equals(columnName1)) {
58                  x = i;
59  
60                  break;
61              }
62          }
63  
64          int y = -1;
65  
66          for (int i = 0; i < _columnNames.length; i++) {
67              if (_columnNames[i].equals(columnName2)) {
68                  y = i;
69  
70                  break;
71              }
72          }
73  
74          if ((x == -1) && (y > -1)) {
75              return 1;
76          }
77          else if ((x > -1) && (y == -1)) {
78              return -1;
79          }
80          else if ((x > -1) && (y > -1)) {
81              if (x < y) {
82                  return -1;
83              }
84              else if (x > y) {
85                  return 1;
86              }
87          }
88  
89          return 0;
90      }
91  
92      private String[] _columnNames;
93  
94  }